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Keywords:

  • asymmetric hydrogenation;
  • carbenes;
  • chiral anions;
  • gold;
  • tetrahydroquinoline
Thumbnail image of graphical abstract

A little gold goes a long way: As little as 0.01 mol % of chiral gold phosphate is sufficient to afford the asymmetric transfer hydrogenation of quinolines with high stereoselectivity (up to 98 % ee). The achiral ligands on gold were found to have considerable effect on the catalytic efficiency.